有点不太明白大伙说的不能设置多个闹铃,为什么非要计算闹铃和当前时间的差值呢...android闹铃给了我们个误区啊!

上一篇的闹铃多个是可以的哇,这不就设置了多个呢

接着上一篇内容直接改的:安卓系统没有塞班那么牛K,关机是没有闹铃的,而且开机后闹铃也是需要重新设置的,我们需要做的事就是设置闹铃的时候存起来,开机之后取出来.

下面来分析下我们该怎么去完成这个功能:

1.首先要准备好一个数据库.

2.开机广播监听,重新设置即可

简单吧,现在来看下:

开机广播类AlarmInitReceiver:

package com.glacier.demo;

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

import com.glacier.db.DbHelper;

import android.app.Activity;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
/**
 * 开机重新设置闹铃广播
 * @author wangyubin
 *
 */
public class AlarmInitReceiver extends BroadcastReceiver {

	Cursor cursor;
	private Calendar calendar;

	@Override
	public void onReceive(Context context, Intent intent1) {
		// TODO Auto-generated method stub
		String action = intent1.getAction();
		//如果是开机广播的话就重新设计闹铃
		if (action.equals(Intent.ACTION_BOOT_COMPLETED)) {
			setAlarmTime(context);
		}
	}

	/**
	 * 重新设置内容
	 * @param context 上下文
	 */
	private void setAlarmTime(Context context) {
		calendar = Calendar.getInstance();
		// 得到当前时间并设置到日历里面
		calendar.setTimeInMillis(System.currentTimeMillis());
		DbHelper dbHelper = new DbHelper(context);
		Date date = new Date();
		//查询数据库存储的闹铃
		cursor = dbHelper.query();
		while (cursor.moveToNext()) {
			String timer = cursor.getString(0);
			System.out.println(timer);
			try {
				if (ConverToDate(timer).getTime() > date.getTime()) {
					System.out.println(timer.split(" ")[0].split("-")[0] + "/"
							+ timer.split(" ")[0].split("-")[1] + "/"
							+ timer.split(" ")[0].split("-")[2] + " "
							+ timer.split(" ")[1].split(":")[0] + ":"
							+ timer.split(" ")[1].split(":")[1]);
					//这边读取年月日时分,也可以读取存进来的long值
					calendar.set(
							Integer.valueOf(timer.split(" ")[0].split("-")[0]),
							Integer.valueOf(timer.split(" ")[0].split("-")[1])-1,
							Integer.valueOf(timer.split(" ")[0].split("-")[2]),
							Integer.valueOf(timer.split(" ")[1].split(":")[0]),
							Integer.valueOf(timer.split(" ")[1].split(":")[1]),
							0);
					Intent intent = new Intent(context, AlamrReceiver.class);
					// 设置intent的动作,识别当前设置的是哪一个闹铃,有利于管理闹铃的关闭
					intent.setAction(timer);
					// 用广播管理闹铃
					PendingIntent pi = PendingIntent.getBroadcast(context, 0,
							intent, 0);
					// 获取闹铃管理
					AlarmManager am = (AlarmManager) context
							.getSystemService(Activity.ALARM_SERVICE);
					// 设置闹钟
					am.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(),
							pi);
					// 设置闹钟重复时间
					am.setRepeating(AlarmManager.RTC_WAKEUP,
							calendar.getTimeInMillis(), 10 * 1000, pi);

				} else {
					//过期的闹铃将不进行设置(可以重数据库中删除)
					dbHelper.delete(timer);
					System.out.println("当前这个闹铃已过期");
				}
			} catch (Exception e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		if(null!=cursor){
			cursor.close();
		}
		if(null!=dbHelper){
			dbHelper.close();
		}
	}

	public static Date ConverToDate(String strDate) throws Exception {
		DateFormat df = new SimpleDateFormat("yyyy-MM-dd hh:mm");
		return df.parse(strDate);
	}

}

package com.glacier.db;

import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
/**
 * 闹铃储存帮助类
 * @author wangyubin
 *
 */
public class DbHelper extends SQLiteOpenHelper {

	private final static String DB_NAME = "alarm.db";
	private final static int DB_VERSION = 1;
	private SQLiteDatabase database;
	private Cursor cursor;

	/**
	 * 主数据库
	 * 
	 * @param context
	 */
	public DbHelper(Context context) {
		super(context, DB_NAME, null, DB_VERSION);
	}

	@Override
	public void onCreate(SQLiteDatabase db) {
		// TODO Auto-generated method stub
		db.execSQL("CREATE TABLE IF NOT EXISTS " + "ALARM" + "("
				+ "ID VARCHAR(20)," + "DATE TEXT)");

	}

	@Override
	public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
		// TODO Auto-generated method stub

	}

	/**
	 * 判断是否存在
	 * 
	 * @param id
	 * @return
	 */
	public boolean isExist(String id) {
		database = getReadableDatabase();
		cursor = database.query("ALARM", new String[] { "ID" }, "ID like ?",
				new String[] { id }, null, null, null);
		return cursor.moveToNext();
	}

	/**
	 * 查询所有数据
	 * 
	 * @return
	 */
	public Cursor query() {
		database = getReadableDatabase();
		cursor = database.query("ALARM", null, null, null, null, null, null);
		return cursor;
	}

	/**
	 * 删除数据
	 * 
	 * @param id
	 */
	public void delete(String i      

      
      
    

      

效果图由于网站占时不能上传，以后补上。

NinePointLineView.java